Transferring device



Aug. 23, 19315. GRAHAM 2,011,627

TRANSFERRING DEVICE Filed Jan. 22, 1934 2SheetsSheet 1 INVENTOR. Jam/cel z'a/zam ATTORNEY.

Aug. 20, 1935. GRAHAM 2,011,627

TRANSFERRING DEVICE h 2 Sheets-Sheet 2 Filed Jan. 22, 1954 BY. m-

Patented Aug. 20, 1935 7 ,011,627 1 TRANSFERRING DEVICE F. Graham,Cardiff, Md

assignor to Peyton du Pont, Incorporated; a. corporation of DelawareApplication January 22, 1934, Serial Not 707,644 3 Claims. erase-3) 7.:Thisinvention appertains to improvements intransferring-devices whichare utilized to transfer relatively fragile materials such as slabs ofmarble from a'place of storage to a machine for performing one of anumber of operations necessaryto finish the product.

Slabs of unfinished marble are usually stored in'an. upright positionsothat whenever it is necemary: to finish amarble slab of. a desiredthickness or quality,;, these features and characteristics-:may beeasily observed. ;',T h8' marble. slabs are then transferred to afinishing machine such as a saw or a planer which areprovided with ahorizontal. bed for receiving the marble Heretofore, the transferring ofmarble slabs froman upright position to the horizontal machinebedsrequiredzamal ual operation engaging several workmen and-sofar asIain awarepno attempt has been made tosimplify thistransferringoperationt While marblehas enduring.

ualities, yet, when it: is in the form of relatively thinlslabshavlng'arr area of several score square f eet,- it is comparativelyfragile due to imperfectionsccaused. by loosening of the seams orjointsa fIfhis is especially true of the highly decorative marble, sincethe veining which gives this marble its distinctive appearance is formedby a system of complex join-ts indicating an inherent We kne s; A.

5 Hence, when marble slabs; and especially those of; the class discussedabove, are transferredmanually from an upright to a horizontal position,the lack; of; supportforrthe underside of the marble slab'and theunequal strains atthe edges thereof as the several workmen lift theslab, cause seams or joints. in the. marble slab to open. Whenmarbleslabs with open seams are in the various processes of manufacture,aconsiderable portion of the marble will I shatter, resulting inexcessive waste and increased cost of production. It isthereforethdmainobject of this inven tionto obviatethese disadvantages by providingtransferring mechanism having a hinged table on which marble slabs may:be receivedfin an upright positiom the hinged table being adapted to beswung to a horizontal position from which position the marble} slab maybe easily skidded onto the horizontal bed of a marble working ac e-Q y YA further objectof my invention resides in the provision of a movabletransferring device comprising a hinged top on which marble slabs maybezreceived in .an upright position, the hinged tablebeing adapted to beswung to ahorizontal position to rest upon a suitable supportingsurface, and a cushioning means for the hinged table arranged. in amanner whereby the hinged table comes to rest gently on its supportingsurface Without transmitting undue shocks to the o marble carried bysuch hinged table.

Other objects and advantageswhich are inherent in the construction of myimproved transferring device will be apparent as the followingspecification is read in connection. accompanying drawings in which. I

Figure 1 is a front elevation of myjimproved transferring'device; y

ure 2 is a side elevation of Figure 1;

Figure 3 is a central vertical section of the 15.

which is mounted on the casters or rollers l2.

Carriedby the base frame II is a rigid table M, having a horizontalsupporting surface dieposed a substantial distance above the base frameH but preferably below the. plane of the horizontal bed of a marbleworking machine (not shown).

The base frame I I includes a perforate top web l6 from which extendother webs forming the perforate end walls I], rear wall l8 and frontWall l9. By this web formatiomthe necessary rigidity is imparted to myimproved transferring device and at the same time the weight thereofdoes not exceed reasonable limits. Due to its relativelyslight weightthe transferring mechanism may be moved manually; although if foundexpedient,

a power drive therefor may be utilized.

' At each perforateend wall I! there is formed a bearing member asconstituting a bearing for the' shaft 2| which extends from one end wallto the other end wall. This shaft Zl-carries a table 22 and constitutesan axis about which this table pivots. Thepivotally movable table 22isof box likeshalpejhaving' a bottom web 23, adapted to rest on the"horizontal surface l5 of the rigid table M; Intersecting horizontal andtransversewebs 24 form the upper surface'of the movable'table .movabletable 22 is.swung to the position as ,shown in Figure 3. It will beobserved that with the 10::

the front wall leis declined downwardlyso that it is pitched at a slightangle from the perpendicuin its upright positionohto the upper surface,of the movable table; the lower edge of the marble; slab rests on theledge 25 extending outwardly beyond the plane of the uppersurfac'en Withthe marble'slab in this upright position on the mov-" able table, histhen ready to be returnedto. a horizontal position as shown in Figure 21and it I will be observed 'th'at'when the movable table'r'ests onthe'upper surface of the rigid table M, the

greater portion of the, movable tame is supported on the'ri'gid table,thus insuring asteady supportg If desired, a' hook 50 may engage thehandl"3 3 to prevent; accidental displacement-of the table scribed;

ioning deviceof the character :now to be-de-v- An arm 261 is carried. bytheomovablel table22 and it is provided with an arcuate slot 2"!- iwhich engagesa; link 28as at 29; The-linkZifis ing the piston the piston35 connected l3O'- 1Z)'.'lSlZ0Il'I'Od. '30 having a piston-3 l on oneend thereof reciprocablymounted in a cylin- 32 is filled witha fluidsuch as oil and as the-piston moves'in'thecylindenthe' oil is forcedfrom one side of the-pistontdthe other When the movable table22gwithiits marble slab M is in a position as shown ins-Figure3,;aworkman graspsthe handle 33. and pulls the movable table toward thehorizontal. .The s1ot2l-permits' freejmovement'of this movable table, toa position shown by the conventionallines at P in'Fig'uIeB, and thisposition issuchthat the combined weight of the tableand marble'above thepivot" shaft :Zl' permits the table to swing toward the horizontal ofitself. Such initial movementofthe table2-2 I causes thearm 26 toengagethe link 8 formov- 3.! toward the cylinder head 34., Asmoves'toward this head 34,7the oil in the cylinder-32 will pass throughthepassage 35 and the orifice 3S"andthence through theport 31totheopposite side of the piston by meansof Sports such as 38. Since thepassage 35 and the *ports 31- anutsa are comparatively largeythe sec 1onda'ry-ldownward movement of the table 22 and the marble slabwill notbe at a rate whichtwould betoo slow for practicabilty: However, when thepiston 3! begins to cut off the passage 35, therate ofdescension willgradually diminish thereby ,al-"

lowing the table22to-come to rest upon" the'rigid tablel 4 very gently.Inits later phase, the piston 3i;forces the oil"through-theorifice ,36,the effec- -t'ive'arealof which maybe adjusted by means of the valve 39Afterthe marbleslab M has been skiddedofi the table 22 onto a horizontalbed of a finishing machine, the movable table may be easilyreturned toits'upright position for loading; When the movable table 22 is in theposition a's'shown inv Figure 2, the piston ,'3I .is closely adjacentthe cylinder head 34 as shown'by the conventional lines in Figure 4. Asthe table 22" is raisedg'the oil rearward of the piston will be'compressed and thus'open thefrelief valves: 40 of the piston 3|, causingthe oil to" flow rapidly totheopposite side, of the" piston '31;Continued downward.

v arr-upper horizontal surface disposed above said ,base .frame, saidrigidtable' including end, rear and front support members extendingupwardly from said base frame, said front support member being declinedfrom the marginal edge of said horizontahsurface downwardly at a slightangle from the perpendicular, bearing members carried by said rigidtable adjacent theintersection of the horizontal upper surface andthe-upper edge I I I ofsaid front supports ofsaid'rigid table, a hori Inorder that theimovable tablemaynotstrike' the "rigid table. withconsiderablewforce which might damage the marble slab,-I provide acushzontally disposed shaft journalled in, said bearing members; am'ovable table' carried by said hori'-- zontally extendingshaftpsaid'table in its one extreme position having one-portion thereofon the upper horizontal s'urface of said rigid table and in' its otherextreme position resting "on'thedeclined frontsupport memberforretaining said movable table in a position pitched'slightly from theperpendicular, and means for cushioning only the descent "of'said"movable= table from such upper surface of 'said rigidtable; v I

2. A transferring device including a base frame,

pitched position't'o its horizontal position on the rollers'for saidbase frame, a rigid table having 'memberaa mOVableJtabIe'carried by saidhorizontally extending shaft,"said tablein its one ex treme positionhaving one portion thereof on the'upper horizontal surface ofjsaid;rigid table and in its other'extreme position resting on the declinedfront support member for retaining said movabletable ina positionpitchedslightly from the perpendicular; and means for cushioning only thedescent of said'-"r'novable table from-such,

pitched position to its horizontal position onthe upper surface of saidrigid table, said'cushioning means being-inoperative during upwardswingingmovement of said movabletable to its pitched position fromitshorizontalposition' 3"; 'Atransferring device including a base frame,rollers forsaid baseframe, a rigid table having an; upper horizontalsurfac'e' dispose'd above said base frame, said rigid" table includingend, rear and front support members extendingupwardly from said baseframe, said frontsupport member being declined from the marginal edgeofsaid horizontal surface downwardly at a slight angle from theperpendicular, bearing memberscarried by said rigid table adjacent theintersection of the horizontal upper surface and the upper edge of saidfrontsupports of said rigid table, a horizon tally disposed shaftjournalled'insaid bearing members; a movable tablecarriedbysaidhorizonupper surface of said rigid table, said cushioning means beinginoperative during initial downward swinging movement of said movabletable from its pitched position, and said cushioning means also beinginoperative during upward swinging movement of said movable table to itspitched position from its horizontal position.

FRANK F. GRAHAM.

